mutter/cogl/cogl-depth-state.c

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-util.h"
#include "cogl-depth-state-private.h"
#include "cogl-depth-state.h"
void
cogl_depth_state_init (CoglDepthState *state)
{
state->magic = COGL_DEPTH_STATE_MAGIC;
/* The same as the GL defaults */
state->test_enabled = FALSE;
state->write_enabled = TRUE;
state->test_function = COGL_DEPTH_TEST_FUNCTION_LESS;
state->range_near = 0;
state->range_far = 1;
}
void
cogl_depth_state_set_test_enabled (CoglDepthState *state,
CoglBool enabled)
{
_COGL_RETURN_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC);
state->test_enabled = enabled;
}
CoglBool
cogl_depth_state_get_test_enabled (CoglDepthState *state)
{
_COGL_RETURN_VAL_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC, FALSE);
return state->test_enabled;
}
void
cogl_depth_state_set_write_enabled (CoglDepthState *state,
CoglBool enabled)
{
_COGL_RETURN_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC);
state->write_enabled = enabled;
}
CoglBool
cogl_depth_state_get_write_enabled (CoglDepthState *state)
{
_COGL_RETURN_VAL_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC, FALSE);
return state->write_enabled;
}
void
cogl_depth_state_set_test_function (CoglDepthState *state,
CoglDepthTestFunction function)
{
_COGL_RETURN_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC);
state->test_function = function;
}
CoglDepthTestFunction
cogl_depth_state_get_test_function (CoglDepthState *state)
{
_COGL_RETURN_VAL_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC, FALSE);
return state->test_function;
}
void
cogl_depth_state_set_range (CoglDepthState *state,
float near,
float far)
{
_COGL_RETURN_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC);
state->range_near = near;
state->range_far = far;
}
void
cogl_depth_state_get_range (CoglDepthState *state,
float *near_out,
float *far_out)
{
_COGL_RETURN_IF_FAIL (state->magic == COGL_DEPTH_STATE_MAGIC);
*near_out = state->range_near;
*far_out = state->range_far;
}